Freeze refers to choppy audio or video playback caused by a poor network connection or limited device performance during real-time audio and video communication.
To highlight transmission qualities and help developers locate issues, the Agora RTC SDK provides callbacks that report audio and video freeze statistics during a call. Developers can also track freezes with Agora Analytics.
The Agora RTC SDK and Agora Analytics use different algorithms to decide when a freeze occurs:
|Product||Video freeze||Audio freeze|
|RTC SDK||In a video session where the frame rate is set to 5 fps or higher, video freeze occurs when the time interval between two adjacent video frames is more than 500 ms.||In the reported interval, audio freeze occurs when the audio frame loss rate reaches 4%.|
|Agora Analytics||Occurs when the video freezes for 600 ms or more.||Occurs when the audio freezes for 200 ms or more.|